Nature of Light

Q.

What is the nature of light?

1. Light is a transverse electromagnetic wave that can be seen by humans.

2. Light does not have any nature

3. Light is a longitudinal wave.

4. Nature of light cannot be determined

Q.

Why is light polarized on reflection?

Q.

How does ordinary light differ from plane polarized light?

Q.

A parallel beam of light strikes a piece of transparent glass having cross section as shown in the figure below. Correct shape of the emergent wavefront will be (figures are schematic and not drawn to scale)

1. 

2. 

3. 

4. 

Q. Speed of light fastest and slowest in which object?

Q. With what medium does light travel in space

Q.

Can interference happen without diffraction?

Q.

The property of light by which it forms shadow of an opaque object

1. Dispersion

2. Rectilinear propagation of light

3. Diffraction

4. Scattering

Q. What is foot candles.

Q. Is light a ray or wave?

Q.

An electron in the excited state of atom is highly unstable.

1. True
2. False

Q.

What is the principle of diffraction?

Q.

In thundering and lightning, we see lightning first and hear thunder later because

1. our eyes are more sensitive to light

2. speed of sound is much more than speed of light

3. speed of light is much more than speed of sound

4. are eyes are better than our ears

Q.

Which of the following is true about nature of light ?

1. Particle

2. Ray

3. Wave

4. All of these

Q.

Speed of light

Q.

Why a distant lightning flash is seen before the thunder is heard?

Q.

what are the terms related to light?

Q.

A light-ray can be thought to behave as______to explain the various phenomena such as reflection, interference etc.

1. wave

2. both particle and wave

3. Particle and wave nature depending on the situation

4. particle

Q.

What is the cause of optical activity?

Q.

The speed of light in vacuum is

1. $3\times {10}^8$ metre per second

2. $4\times {10}^8$ metre per second

3. $5\times {10}^8$ metre per second

4. $6\times {10}^8$ metre per second

Q. Explain hamiliton operator and schrodinger wave equation

Q.

Joe was holding a long bending pipe and he was trying to see the candle but he could not. What must be the shape of the pipe so that he can see the candle?

1. 

2. 

3. 

4. 

Q. Riya wants to create a DIY cardboard to observe the candle, Which of these would be an appropriate construction?

1. 
2. 
3. 
4. 

Q.

Light travels in ___________.

1. A curved path

2. A circular path

3. A straight line

4. Back and forth

Q.

Which of the following tasks can be done using light?

1. B

2. K

3. J

4. U

Q.

Name three important properties of light. [3 MARKS]

Q. What is the difference between reflection and emissionof radiation ?

Q. Which of the following properties of light conclusively support the wave theory of light?
(a) Light obeys the laws of reflection.
(b) Speed of light in water is smaller than its speed in vacuum.
(c) Light shows interference.
(d) Light shows photoelectric effect.

Q. Formation of shadows suggests that light travels in
(a) vacuum
(b) straight lines
(c) dark rooms
(d) wave form

Q.

_____ allow only some part of light to pass through them.

1. Opaque objects

2. Transparent objects

3. Transparent and opaque objects

4. Translucent objects